Stop-motion for knitting-machines.



0. LABOCHE. STOP PviOTlON FOR'KNITTING'MACHINES.

APPLICATION FILD JAN.I2.19I4- Pat-ented Jan. 16,1917.

5 SHEETS-SHEET l.

Nw Mm 0. LAROCH E. STOP MOTION FOR KNITTING MACHINES. APPLICATION FILEDMN. 12, 1914.

W936? Patented Jan.16,1917.

s SHEETS-SHEET-L 0. LAROCHE. STOP MOTION FOR KNITTING MACHINES.APPLICAT|0N FlLED JAN. 12, 19M.

Lgm sw, Patenwfl Jan.16,1917.

s SHEETS-SHEET 3.

O. LAROCHE.

STOP MOTION FOR KNITTING MACHINES.

APPLICATI ON FILED JAN. I2. 1914.

Patented J 16, 1917.

s SHEETS-SHEET 4 0. LAROGHE.

STOP MOTION FOR KNITTING MACHINES.

APPLICATION FILED 11m. 12. 1914.

1,1236%, Patenmdk Jan. 116, 191?,

66 5 SHEETS-SHEET 5.

an snares raa an r canton.

OLIVIER LAROGI-IE, OF HAMILTON, ONTARIO, CANADA, ASSIGNOR TO CANADIANKNIT- TING COMPANY LIMITED, OF HAMILTON, ONTARIO, CANADA, A CORPORATIONOF CANADA.

Specification of Letters Patent.

Patented Jan. 5165, 3191?.

Continuation in part of application serial No. 727,311, filed October23, 1912. This application. filed January 12, 1914. Serial No. 811,691.

To all whom it may concern:

Be it known that I, OLIVIER Lanoonn, a subject of the King of GreatBritain, residing at Hamilton, in the county of VVentworth and Provinceof Ontario, Canada,

have invented certain new and useful'Improvements in Stop-Motions forKnitting- Machines, of which the following is a full, clear,concise,'and exact description, referonce being had to the accompanyingdrawings, forming a part of this specification.

My invention pertains to stop-motions for knitting machines, 6., todevices for arresting the operation of a knitting machine in the eventof a y'arn thread breaking, or in case of the occurrence of a knot in ayarn thread, or in case of a yarn thread being placed under an unduetension.

7 The invention is particularly directed to stop-motions for use inconnection with knitting machines of the spring-needle type.

In the operation of knitting machines of the spring-needle type, thequality of the work produced is marred, and sometimes the workiscompletely spoiled,'it one or more of the yarn threads is delivered tothe machine at an unduly high tension.

It is one of the objects of my invention, therefore. to produce astop-motion in the use of which the yarn thread is permitted to enterthe machine at a tension which is not appreciably higher than if nostop-motion were employcd. 7

Further. in the use of knitting machines of the spring-needle type, theyarn threads are taken by the machine at an exceedingly high rate ofspeed, so that the end of a broken yarn thread will reachthe machinevery quickly. If a broken end reaches the machine during the running ofthe latter,-

a press-off occurs, and a quantity of material is wasted- It is anotherobject of my invention,

therefore, to provide a stop-motion which will operate with extremerapidity, thereby to insure that the operation of the machine bearrested before the end of a broken thread can reach the machine.

It is another object of my invention to produce a stop-motion which willat all times be certain in its 0 aeration, which will be convenient inuse an easy to re-sctafter changes may be made in the details havingbeen actuated, and which will be of a durable construction and notliable to'get out of order in the course of use.

It is still another object of my invention to improve upon stop-motionsfor knitting machines generally.

l The present application is in part a continuation of an applicationfiled by me October 23,1912, Serial No. 727,311.

By way of example, I have described in the following specification andshown in the accompanying drawings one form of stopmotion embodying myinvention as applied to a knitting machine of the spring-needle type. Iwish it understood, however, that the invention may be embodied andemployed in other manners than that which I have described and shown,and that of construction of the embodiment which I have described andshown without exceeding the scope of my invention as defined in theappended claims. I

In the drawings: Figure 1 is a plan showing the needle-supportingcylinder and some of the associated parts of a knitting machine ofthespring-needle type intended for the production of a. tubular knittedfabric, having a stop-motion constructed in accordance with my inventionapplied thereto; Fig. 2 is an end view showing one o the thread-engagingunits: Fig. 3 is a frontview of the same; Fig. 1 is a fragmentary planof the clutch-trip: Fig. 5 is a plan showing the clutch-trip-actuatinglatch; Fig. 6 is an end viewof the same; Figs. 7 and S are an end viewand a plan, respectively. of the brake mechanism; Fig. Ois an end viewof the brake-actuating ratch; Fig. 10' is a plan of the same; Fig. 11 isa perspective view of a portion of one of the thread-engaging units:Fig. 12 a section on the line l'z2 l2 of Fig. 11, looking in the.direction of the arrows; Fig. 13 is a plan of the shears; Fig. His asection on the line 1414 of Fig. 11. looking in the direction of thearrows: and Figs. and 16 are a plan and an end view. respectively, ofportions of the actuating shaft and the trip shaft, showing the springsfor holding the latter in operative position.

The 'same reference characters refer to the hook 32 of me somespecification and one 'everalfigures of the aocomr yini: drawings.

.roughout the following w particularly to Fig. 1, this hine of thespring-needle the production of a tubusuch as is used, for innufactureof underwear. construction well and includes a needle- 20, upon whichthe lar knioten :1;

ted. a number of yarn ti snnultaneonsly in e (tour of such threads beingsh .cl varn thread 25, to the needles 21. wheel 25, together mechanismconstitute a J threads used in the manng units are d sposed mound theneedle cylinder 1;. j oses-of this specification it has on necessary toshow a portion of one of An overhead take-up (not shown) i by a verticalshaft 26, receives the work as it is delivered upward'in cylindricalform, from the needles. Machines of this character are usually equippedwith a op-mction which throw off the drive wh er th is a press-0E, 2'. e

. o of some failure of the mechanism to operate properly or by reason ofthread, the work leaves the the continuity of the piece the most usualcauses of is broken thread.

tion of a. well known kind -is shown in Figs. 1 and l: it includes a.teeler having a pivoted finger -27, ivhich rests upon the work near theneedles, during the revolution of the same. A spring 28, acting upon thestem 29 which supports the finger 27, holds the finger aga nst the work.The

tendency of this spring is to rock the stem in a direction toward theWork; but normally, by reason of the engagement of the finger with thework, this rocking of the stem is prevented. In case, however, a hole inthe work should occur, the finger 27, would enter such hole, and thestem 29 would be rocked under the action of the spring 28. The sameresult would occur if there should be a press-off, since the support forthe finger would be removed in this case also.

lVhen the stem 29 is rocked, as described above, a pin 30 thereonstrikes one end of a pivoted dog 31, the other end of which is formedwith a hook 32 which normally retains the end of a clutch-throwing lever83. By striking the dog 31, the pin 30causes of which is provided forlatter to release the lever 31, the mechanism applies a brake to thecylinder 20, thereby efiecting an instant stoppage-0f the machine. Themechanism is supported upon end standards wiich are connectedlongitudinally by a metallic shell 36. The standards rise from thebobbin supporting back table 37, with which the machine is provided, thebobbins being positioned side by side beneath and somewhat to the frontof, the shelf 36. zontal trip-shaft 38 is rockably mounted in brackets39 carried by the shelf 36. This shaft carries (Figs. 5 and 6) anupwardly bent hook 40, which normally engages the rear side of aclutch-trip-actuating latch 41 which is pivoted upon a bracket 12extending forwardly from the shelf 36. A re tractile spring 43 holds thelatch 41 in engagement with the hook and when the- .hook is removed fromthe path of the latch 4L1 by reason of the shaft 88 being rocked, thelatch will snap rearward under the action of the sprin The latch 41 isconnected, by means of a wire or the like, 1 1

A hori- 4 upon. the clutch-throwing lever 33 will be.

released and the clutch thrown out. It will be seen from the above thatthe drive is thrown off, through the agency of the clutchtrip-actuatinglatch 41, whenever the tripshaft' 38 is rocked.

In addition to the hook 40, the trip-shaft 38 is provided with a pin 50(Figs. 710) which engages the front side of a brakeactuating latch 51 inthe shape of a crank' lever. The latch 51 is pivoted upon a bracket 52carried by the shelf 36, and is held a ainst the pin 50 by means of aspring 53. The front end of the latch 51 is provided with a retaininghook 54 which normally engages in front of the top end of a pivotedbrake-tripping lever 55, thus securing the-latter against movement. Thebracket 52 is formed with a guide slot 56 for receiving the top end ofthe lever and maintaining it in operative relation with the book 54:,this slot being flared outwardly at its front'end to facilitate thereturning oi the lever 55 to its original position after it has beenreleased. in the manner described bellbelow.. A spring 58 holds thelever 55 against the latch 51. lVhen the latch is released, this springcauses the lever 55 to snap forward. Thexlever'55, by its forwardmovement, operates a brake 59, which is connected with the lever througha link 60. Normally, as has been said, the hook 54 holds the lever 55 inits rearward position, with the brake off but when the tripshaft 38 isrocked (thus causing the pin 50 'to rock the latch 51 so that its hook54 is moved out of the path of the lever 55), the lever 55 is permittedtospring forward, thereby causing the brake 59 to be thrown on. Thus therocking of the trip-shaft 38 not only results in the throwing out of theclutch, as described above, but it also effects the application of thebrake. The result of the trip-sh'aft 38 being rocked, is, therefore,that the machine is immediately stopped. By mechanism now to bedescribed, the trip-shaft 38 is caused to rock Whenever a yarn threadbreaks or a cop becomes exhausted, whenever one of the yarn threads isplaced under a too great tension, and whenever a knot occurs in a yarnthread. This mechanism includes a plurality of thread-engaging units,one of which is provided for each of the yarn threads used in themachine. These units may be of identical construction; and a descriptionof one of them, therefore, will sufltice. Each of the units includes abracket 61 (Figs. 2, 3, 11 and 12) extending frontwardly from the shelf36, and having its front end bent down so as to provide a verticalportion 62. The lower end of the bracket-62 is formed with athread-receiving notch 63, the upper part of which is beveled so as tofacilitate the passage of the thread therethrough. Secured to the rearof the bracket portion 62 is a guide wire 63, which extends forwardbeneath the. notch 63 and in connection with the notch forms a threadguide having an opening in its side through which the thread may bepassed in threading the guide. A second guide, 64, extends forward fromthe shelf 36, below the guide 63, and serves to maintain the thread inposition between the blades of the shears and also serves to arrestknots or. tangles in the thread. Above the thread guide 63, 63, 'thebracket portion 62 is provided, at the front thereof, with a threadguide 65 also having an open side to facilitate its threading. In theuse of the mechanism, the thread 22 passes from the bobbin to theknot-arresting guides 64, between the shear blades, throughthe guides63, 63 and 65,

and thence vertically upward over a hook;

66 (to be described below) and thence to the feed guide 24 and stitchwheel 25'.

Each'unit is provided with a horizontally disposed controller arm 67which is arranged to pass laterally across-the face of the guide 63, 63in position to be supported by the thread passing therethrough. Thisunder side of the shelf 36. The controller arm 67 is very light and theweight of the parts connected therewith is so distributed that the armwill rest lightly on and be supported by the thread so long as thethread remains unbroken (Fig. 11). In case, however, the thread shouldbreak, or be severed in the manner to be hereinafter described, or incase the cop should become exhausted, the end of the controlling arm,being deprived of its support, would drop, the collar 69 rocking in acontra-clockwise direction on the stem 70. The rocking movement of thecollar 69 which thus results from the dropping of the end of thecontrolling arm owing to the breaking of a thread, effects a temporarycoupling of the trip-shaft 38 with an actuating shaft 73, which ismounted in the brackets 39 immediately to the rear of the trip-shaft.The actuating shaft is continuously rotated in the direction of thearrow (Fig. 11), by means of a belt i'i deriving power from the take-upshaft "26 (Figs. 1, 5 and 6). The actuating shaft 73 is provided with aplurality of star-wheels 72, one of which cooperates with each of thethread-engaging units.

Besides the pin 68, the collar 69 is provided with a second pin 71,which. when the collar rocks as described above, falls between the teethof thecooperating star-wheel 72 and onto a pin 75 which projectsrearwardly ating shaft 73 rotates continuously in the direction of thearrow so long as the knitting machine is running. \Vhen, therefore, byreason of the controlling arm 67 having dropped, the pin 71 fallsbetween the teeth of the star-wheel 72 and onto the pin 75, the toothimmediately above the pin 71 will, during the rotation of thestar-wheel, press this pin ,downward upon the pin 75 of the trip-shaft,thus causing the trip-shaft to quickly rock in its bearings. against theaction of a spring 38 (Figs. 15 and 16).. The result is that the latches41 and 51 are immediatelyactuated to effect the throwing out of theclutch and the application of the brake, respectively, as describedabove. mechanism so far described, therefore,

,e or tenure 01 M18 tl'iread in drops.

I the when yarn i ism also it pair between the blades thereof motarresting guide so that, when shears Will be on hove the tree toein,which I V inclined ii J! i 'w s an aotua-V o n The actuat- ,9; arm 83 ispii'o'. l, i to one side of e bracket-portion igs, 2, 3 and 11) ear-n183 is b yeled at its upper end and. arses in a loop which is formed in adeineinber 85, the member being pivt ($6. to a post which extends vertiofrom the bracket (all The post with an extension 88, at the which ispivoted, an upat its top end the hook 343 The pivoted upright 90 iswith'a downwardly extending foot 91 which interlocks with the top end ofthe detent member 85, so that When the upright 90 is rocked. about itspivot, the detent mem- A spring 92 15 her, 85 islikewise rocked.connected between the pivoted uprightQO and the post 87, which springtends to hold the upright in normal vertical position. A spring 93 isconnected between the actuating arm 83 and an extension 94 projectingforwardly from the bracket portion 62.

Vfith the parts in the position shown, the actwting arm 83 is retainedby the detent ABZDb-ii-l 85; and it will remain in this condiso long thetension of the thread is Witiin the desired limits. In case the tensionof the hread should be increased, howthe upright 90 will be rockedforwardly about its pivot, therel y effecting a corresponding rocking ofthe detent member 85. By the time the tension has increased to such anextent as to become undesirable, the detent member 85 will have beenrocked about its pivot su' iliciently to release the end of theactuating arm 83, whereupon the latter will snap forward under theaction of the spring 93. :easou of the engagement of its end i in thecani'slot or or t his snapping forward of will cause the shears acrossthe blade '77 Wher The severing o" the stoppage of the mach" 0". no" (+1All d :crin-ed above Lt will that s on motion ucti niechine whene toogre curs e y "cad at one of th not or tang occur it Will.

become i .e tension on the thread w 'hich a a stopping or the machinebefore. the severed end of the "liread has had time to reach theneedles.In case a knot should through the guide 6-1: it is possible that suchknot might become wedged orarrested at the guide 63 53, so that thecontrolling arm would not fall after the shears had been operated to cutthe thread in manner above descr In such case the controller armwouldnot operate tc iinrned .tely the machine upon the on oi tinath butthe me h'ine would continue running, causing the breakage oi? yarn. tisome other point and the broken end mig enter the machine. To p eventany 531380;" bility of this l mount loosely open th sting shaft 73 acollar orovided with. e book 97 which engages around the actuating arinThe collar 96 has formed in the periphery theirs-of a channel 98 0; li;d len th, which. channel receives :1 pin tending forwardly from the tripft 5 When therefore, the actuating arr forward, will cause the collarrocked upon the shaft 78, by the engagement of the arm 83 with the hookWhen the defect which resultec in the tuation of the stop-1notion hasbeen remedied and the ends of the thread pieced together, the mechanismwill be rethreaded and the parts reset by hand. in order to reset theparts, it Will usually be necessary to turn the actuating shaft 73backward somewhat in its bearings, in order to release the pin 71, whichwill have been clamped between the pin and a tooth of the starwheel' 72.It will be understood of course that the upright and the spring 92 maybe adjusted id arranged so as to operate upon the occurrence of anypredetermined degree of tension, to suit the requirements of eachparticular case.

4 l A 1 I r the cutting of the thread above the knot wedged orar- .1 theguide clcausing incregse The actuation of the stop-motion when {tilundue tension thereon occurs has mechanism little resistance to thepassage stoppage of the machinery before harm can result owing to theincreased tension on one of the threads; and thus avoids bad work andsaves much material and time which would otherwise be wasted owing tothe occurrence of holes, etc., in the work. J\gd.ill,

itinsures that. the thread shall .not breakscribed above; since themachine will be stopped immediately upon the occurrence of the unduestrain, whereupon the cause of such strain may be removed. Again, thedescribed above prevents knots, bunches, or other imperfections in theyarn from entering the machine where they would be liable to causechoking of the feed devices and breakage of the thread at its p int ontotne machine.

T he mechanism is simple in construction and certain in its operation.It offers'but of the yarn thread, since the path-traversed by the lattordiffers only slightly from that which it would follow if no stop-motionwere employed. The mechanism does not, therefore,

increase appreciably the tension at which the thread operates; and thisis a most important advantage. The mechanism operates with extremerapidity, effecting the stoppage of the machine practicallysimultaneously with the occurrence of the defect. This is another mostimportant advantage, since it prevents a broken end from reaching themachine even when the latter is running at a high speed. i

The mechanisn'i may be used, of course,,in connection with othermachines than that indicated in the drawings; and changes may be made inthe machine ifor this and other purposes. Such changes in the embodimentof my invention are contemplated by me, what 1 claim being: 3

1. A stop-motion for iknitting machines comprising a clutch-operatingdevice, a support, a rockable shaft mounted on said support, adapted,when rocked, to actuate said device, an actuating shaft mounted on saidsupport and continuously driven from the machine, a guide mount d onsaid support adapted for the passage of thread therethrough, a tiXedsuppoi ,a member movably mounted on said support and cooperating withsaid guide, said member being supported by the thread pzissing throughsaid guide, and means, associated with said memher, for interlockingsaid actuating shaft and said rockable shaft when said member moves, dueto the breaking or severing of a. thread, whereby said actuating shaftcauses said rockable shaft to be rocked, and means operated upon anincrease in the tension on the thread to sever the thread between thethread supported member and the thread supply.

2. The combination with a knitting machine, of mechanism for arrestingthe operation of said machine oen the continuity of the yarn thread ofthe machine is broken, said mechanism including a clutch-operativedevice, a brake, latching means for actuating said device and saidbrake, a continuously rotating actuating shaft, having a projectionthereon, a rockable shaft having a projection thereon, detent means forsaid latching means carried by said rockable shaft, a pair of verticallyarranged guiding eyes, a movable member located, when in one of itspositions, in the path of the projection of said. actuating member andin operative relation with the projection of said rockable shaft, meansresting upon said thread between said eyes and normally holding saidmovable member out of the path of the projection of the actuatingmember, whereby, when the continuity of such yarn thread is broken, saidmovable member effects a coupling between said rotating shaft and saidrockable shaft, to remove said detent means from said latching means.

3. The combination with a knitting machine including a rotaryneedle-supporting head, of mechanism for arresting the opera.-

tion of said machine when the continuity of the yarn thread of themachine is broken, said mechanism including a clutch operat ing devi e,a releasable brake, adapted,

ibased, to bear upon said, head,

when, re latching means for actuating said device and releasing saidbrake, a continuously rotating actuating shaft, having a pro ectionthereon, a rockable shaft having a projection thereon, detent means forsaid latching means carried by said rockable shaft, a movable memberlocated, when in one of its positions, in the path of the projection ofsaid actuating member, and in operative relation with the projection ofsaid rockable shaft, but normally held out of such position by said yarnthread, whereby, when the continuity of such yarn thread is broken, saidmovable member effects a coupling between said actuating shaft and saidrockablc shaft, to effect the removal of said detent from'said iatch.

4. The combination with arresting mechanism, of a rockable shaft,adapted, when rocked, to actuate said mechanism, an actuating shaft, athread-supported member adapted, when released, to connect said firstshears,

s, whereby said first a shears, a threadion .evice for actuating saidshears, and a dev ce, controlled by said tension device, for rockingsaid first named Lhe combination with arresting mechan sni, of a latchdevice adapted, when re leased, to actuate said mechanism, a rockableshaft adapted, when rocked, to release said latch, an actuating shaft, athreadsup ported member adaptedwhen released, to connect said first; andsecond named shafts, whereby said firstnamed shaft is crooked, a athreud-controlled tension device for actuating said shears, and adevice,conirolled by said tension device, for rocking laid first named shaft. I

6. The combination with a clutch throwing. device and a brake, of alatch device adapted, When released, to actuate said clutch throwingdevice, a second latch, adapted, when released, to actuate said brake, arockable shaft adapted, when rocked, to release both of said latches, anactuating shaft, a thread-supported member adapted, when released, toconnect said first and second named shafts, whereby said first namedshaft is rocked, a shears, a threadcontrolled tension device foractuating said shears, and a device, controlled by said tensioi; device,for rocking said first named shalt.

ber, whereby-"said .rockable shaft is rocked upon said arm" beingreleased.

' 8. The combination with an arresting mechanism, of a rockable shaftadapted, when roclred, to actuate said inechanis i, an actuating shaft,a thread-supported member adapted, when released, to connect said firstand second named shafts, whereby said first named shaft is rocked, ashears, a spring actuated pivoted arm adapted, when released, to actuatesaid shears, a thread-controlled detent for said arm, a collar looselymounted on said actuating shaft-and having a projection in engagementwith said arm, said abutment, able shaft collar being provided with anand cooperat vely disposed with rehaving,

7. The combination With arresting mechfor said arm, a rockable theknitting thread is mechanism for rendering an abutment on said -rock-'-a thread guide above the shears spect to the abutment on said collar,Whereby said rockablevshaft is rocked. upon said arm being released.

9. In a stop-motion a shears including a fixed blade and a movhble bladehaving a cam slot-therein, a pivoted spring actuated arm having one endthereof in engagement with said cam slot, and a thread-controlled detentnormally engaging the upper end of said arm.

10. A stop-motion for knitting machines, in combination,stoppingdevices, a rock shaft for rendering said devices active to stopthe machine, a rotating actuating shaft parallel to the rock shaft, aseries of coupling devices arranged rt intervalsalong the shafts, athread-supported controller corresponding to each coupling device, thefall of which when the continuity of the thread is broken couples theshafts together, a thread cutter between each controller and thecorrespondin thread supply, a knot arrester between each cutter and thecorresponding thread supply, and a thread-engaged controller for eachcutter conssructed to be operated by an increased tension on thecorresponding thread.

' 11. A stop-motion for knitting machines, having, in combination,stopping devices, and mechanism for controlling the stopping devices bythe thread fed, to the machine comprising a knot arresting guidearranged over the thread supply, a thread cutter above the guide, athread guide above the cutter, a controller arm resting on' thethreadbeyond the guide, a movable thread guide above the controller, saidguides being arranged that the thread leads in an approximately straightline therethrou h, a driven actuator, devices rendered active controllerarm for coupling the actuator to the stopping devices, andm'eansrendered active vby the movement of thesmovablc guide under anincreased tension on the thread for operatingthe cutter;

12. A stop-motion for biitting machines, having, in combination,stopping devices, mechanism for rendering the devices active to stop themachine when the continuity of broken, comprising thread guide having asubseantially vertical face, guides above and below said guide fordirecting the thread therethrough in a substantially vertical line, anda pivoted con troller arm extending horizontally from its 1 pivot acrossthe face of said the thread and the face of supported by the thread.

13. A stop-motion for knitting having, in combination,

guide between the guide and machines, stopping devices,

to stop the machine, comprising a knot arresting thread guide, shearsabo e the guide, a

substantially vertical face, ashear eontrolthe devices active 4 rec .the stopping devices active ling thread guide above the latter guide, apivoted thread supported controller arm extending horizontally from itspivot across the face of the substantially vertical guide, and meansbetween the controller arm and stopping devices for operating thedevices when the controller arm falls.

14. A stop-motion for knitting machines, having, in combination,stopping devices, a rock shaft the movement of which renders to stop themachine, a rotary actuator shaft carrying a star wheel, a pin on therock shaft normally at one side of the star wheel, and athreadcontrolled coupling pin for connecting the star wheel and rockshaft.

15. A stop-motion for knitting machines, having, in combination,stopping devices, a rock shaft, the movement of which renders thestopping devices active to stop the machine, an actuator shaft, a yarnguide having a substantially vertical face, a pivoted controller armextending horizontally from its pivot across the face of the guide andcopier: of this patent may be obtained for five cents each, byaddressing the normally supported by the thread passing therethrough,and devices for coupling the actuator and rock shafts which arecontrolled by the controller arm.

16. A stop motion for knitting machines, having, in combination,stopping devices, a rock shaft the movement of which renders thestopping devices active to stop the ma.- -h ine, a rotary actuatingshaft parallel to the rock shaft and carrying a star wheel,'a radial pinon the rock shaft at one side of the star wheel, a coupling pin forconnecting the star wheel and radial pin, and a thread supportedcontroller arm connected with the coupling pin for holding it out ofengagement with the star wheel when supported by the thread and forengaging it with the star wheel when released by a break in thecontinuity of the thread.

OLIVIER LAROCHE.

Witnesses FRANCIS MoNnTTA, Gnonon NUTTING.

Commissioner of Fatents,

Washington, D. C.

